Machine for matching boards



(No Model.) 3 Sheets-Sheet 1. B. S. ATWOOD.

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(No Model.) 3 Sheets-Sheet 2.

B. S. ATWOOD.

MACHINE FOR MATCHING BOARDS.

No, 307,789. Patented Nov. 11, 1884..

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(No Model.)

3 Sheets-Sheet 3. B. S. ATWOOD.

MACHINE POE MATCHING BOARDS.

No. 307,739. Patented Nov. 11, 1884.

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BENJAMIN S. ATIVOOD, OF SOUTH ABINGTON,MASSACHUSETTS.

MACHHNE FOR MATCHING BOARDS.

SPECIFICATION forming part of Letters Patent No. 307,789, dated November11, 1884.

Application filed May 4, 1883. (No model.)

To a whom, it may concern:

Be it known that I, BENJAMIN S. A'rwoon, of South Abington, in thecounty of .Plymouth and State of Massachusetts, have invented certainImprovements in Machines for Matching Boards, of which the followingdescription, in connection with the accompanying drawings, is aspecification.

This invention has for its object the cutting of a groove in the edge ofone board and a tongue on the edge of another board at one and the sametime, and an improved method of applying glue to the tongue on one sideof of a board, which is afterward to be inserted in the groove formed inthe edge of another board; and it consists in mounting the feedrollersused in a machine embodying my invention in spring-boxes; in the gearfor driving the feed'rollers so that they shall bear their whole lengthupon the board operated upon and hold it down on the frame whatever thethickness of the board may be; a guidetable at the feed end of themachine, so that when a board is placed in the machine it will be fedautomatically; in fixing at the delivery end of the machinea glue-potheated by steam, in which a wheel revolves, and over which the boardpasses as it leaves the machine and receives on its tongued side an evencoating of glue; in a gage fixed to a cross-bar on the ma chine, wherebythe cutters, when taken out to be sharpened, can be replaced, or anotherset put on, so thatthey willcut a groove or tongue of exactly the samesize as that already cut, and in hinging the frame carrying thefeedrollers so that it can be raised when required to adjust thecutters.

Referring to the accompanying drawings, Figure l is a plan or top Viewof a machine embodying my invention. Fig. 2 is a side elevation of thesame. Fig. 3 is an elevation ofthe delivery end. Fig. 4 is an enlargedview of the gage. Fig. 5 is a section of the rim of the wheel for gluingthe tongue.

A is the main frame; 13, the upper frame, hinged at one end to the frameA by bolts (3 and held down at the other end by bolt D.

E is a feed or guide table provided with guides F, the surfaces of whichcorrespond with the surfaces of guides G on the upper frame, E.

II II are friction rollers, which project slightlybeyond the surface ofthe guides G.

I I are the feed-rollers, the journals of which work in boxes K on theframe B, and the feedrollers I are kept up to their work by means ofspiral springs L, the tension of which is regulated by means ofset-screws M. In Fig. 1 the cover of one of the boxes is removed so asto show the springs L. By having the j ournals at both ends of thefeed-rollers carried in the boxes K and the tension of the springsregulated, an even pressure is exerted upon the board passing betweenthe feed-rollers I and the friction-rollers H.

N is a shaft fitted at one end with a drivingpulley, F, to which motionis communicated from any convenient source.

011 the shaft N is mounted the cutter-carriers Q. On the other end ofthe shaft N is a small pulley, R, from which motion is communicated tothe shaft S by belt T, passing around pulley U. The other end of theshaft S carries the pinion V, which gears into a cog-wheel, W, on theshaft X, on which is mounted two bevelwheels, Y Y, that gear into otherbevel-wheels, Z Z, on short shafts a a, carried in bearings on the beamsb b.

In the center of the short shafts cm are pivoted the pinions c 0, whichgear into cog-wheels d d, which communicatemotion to the spindles of thefeed-rollers I I through universal joints 6 c. The spindles of thefeed-ro1lers are square at their lower ends and fit into correspondingholes formed in the upper boss of the upper universal joints, so thatwhen the frame 13 is raised the ends of the spindles will draw out ofthe bosses. The object of the universal joints is to allow thefeed-rollers to accommo date themselves to different thicknesses ofboards.

On the bar f, Fig. 1, are mounted the gages. (Shown on an enlarged scalein Fig. 4, which shows one of the gages and a portion of the barf.) Thisgage consists ofan adjustable basepiece, 9, provided with a slot throughwhich a set-screw, 9, passes, to hold the same in position on the barf.

hhhVare three sliding pieces provided with slots, through which screws zt" 2"pass for holding them in position upon the base-piece 9.

hen it is desired to remove the cutters to the glue pot.

be sharpened, one of them is first brought opposite to the gage and thesliding pieces h h h pushed so as to touch the knife-edge of the cutter.The sliding piecesare then clamped down by means of the screws t 13 i,and thus held firmly until it is desired to replace the cutters, theknife-edges of which are then again placed so as to touch the slidingpieces h h h and then clamped in position. After all the cutters havethus been set the screw 9 is loosened and the base-piece g (and with itthe sliding pieces h h h) is drawn back out of the way.

9' is a glue-pot fixed at the delivery end of the machine, and is formedwith a space, It, at the bottom, into which steam is admitted by thepipe Z, for the purpose of heating and keeping the glue in a fluidstate.

m is a shaft carried by suitable bearing on On this shaft is mounted awheel, 02, having a fixed rim, n, on one side and an adjustable rim, n,on the other side, as

shown in Figs. 1 and 5. The space between the two rims is adjusted tothe width of the tongue, beingcut so that as the board passes over theWheel an even coating is applied entirely over the edges of the board'and tongue. The shaft m is caused to rotate by means of a cog-wheel, p,and pinion q, the shaft of the latter carrying the pulley 1', which isdriven by power from any convenient source.

It will be seen that while one set of cutters is cutting the tongue theother set is cutting the groove.

WVhat I claim, and desire to secure by Letters Patent, is

1. In a machine for matching boards, the combination, with theautomatically-adjustable feed-rollers I, provided with spindles havingangular lower ends, of the universal joints 0, provided with angularholes in their upper bosses, and mechanism connecting said universaljoints with the driving-shaft, substantially as described, wherebymotion is imparted to said feed-rollers in whatever posi tion they maybe, and whereby said rollers may be disconnected from the driving mechanism, as set forth.

2. In a machine for matching boards, the combination, with thetransverse bar f and the cutters borne by the cutter-carriers Q, of thegages consisting of base-pieces g, set-screws g, sliding pieces h h h,and set-screws t t" 12, substantially as and for the purposes described.

3. In a machine for matching boards, the combination, with the glue-pot,of a glue-carrying wheel journaled in said pot, provided on one side ofits periphery with a fixed rim and on the other side with an adjustablerim, substantially as described, whereby said wheel may be adjustedtoboards having tongues of different thicknesses, as set forth.

OI-IAS. F. PERKINS, CHAS. H. DREW.

